Bob Shelton, following his graduation from Bob Jones University, served as a missionary with his wife in the Far East for 10 years. They were unable to return to the field following the outbreak of the Vietnam War. Dr. Shelton then served as a pastor of First Baptist Church in Pontiac, Michigan. In 1974 the Sheltons began a fulltime ministry of evangelism and speaking at Bible conferences, where Dr. Shelton often shares his knowledge of Bible prophecy.